<template>
  <div>
    <el-row type="flex" justify="end">
      <!-- 年份选择框 -->
      <el-select v-model="currentYear" size="small" @change="getCurrentDate">
        <el-option v-for="year in yearList" :key="year" :value="year" :label="year+'年'" />
      </el-select>

      <!-- 月份选择框 -->
      <el-select v-model="currentMonth" size="small" @change="getCurrentDate">
        <el-option v-for="month in 12" :key="month" :value="month" :label="month+'月'" />
      </el-select>
    </el-row>
    <el-calendar v-model="currentDate">
      <template #dateCell="{date,data}">
        <div class="date-content">
          <span class="text">{{ data.day | getDay }}</span>
          <span v-if="isWeek(date,data.type)" class="rest">休</span>
        </div>
      </template>
    </el-calendar>
  </div>

</template>

<script>
export default {

  filters: {
    //  过滤器
    getDay(oldVal) {
      const day = oldVal.split('-')[2]
      return day.startsWith('0') ? day.substring(1) : day
    }
  },

  data() {
    // 获取当前日期
    const currentDate = new Date()
    // 获取当前年份
    const currentYear = currentDate.getFullYear()
    // 获取当前月份
    const currentMonth = currentDate.getMonth() + 1

    const yearList = []
    // 算出前五年和后五年的年份
    for (let i = 0; i < 11; i++) {
      yearList.push(currentYear - 5 + i)
    }
    return {
      currentDate,
      currentYear,
      yearList,
      currentMonth
    }
  },

  //   侦听数据
  watch: {
    //   点击天数时，动态改currentDate
    currentDate(newDate) {
      this.currentMonth = newDate.getMonth() + 1
      this.currentYear = newDate.getFullYear()
    }
  },

  //   函数
  methods: {
    getCurrentDate() {
      this.currentDate = new Date(this.currentYear + '-' + this.currentMonth)
    },

    // 判断是否为周末
    isWeek(date, type) {
      const res = (date.getDay() === 6 || date.getDay() === 0) &&
        type === 'current-month'
      return res
    }
  }
}
</script>

<style  scoped>
::v-deep .el-calendar-day {
  height:  auto;
 }
::v-deep .el-calendar-table__row td, ::v-deep .el-calendar-table tr td:first-child,  ::v-deep .el-calendar-table__row td.prev{
  border:none;
 }
.date-content {
  height: 40px;
  text-align: center;
  line-height: 40px;
  font-size: 14px;
}
.date-content .rest {
  color: #fff;
  border-radius: 50%;
  background: rgb(250, 124, 77);
  width: 20px;
  height: 20px;
  line-height: 20px;
  display: inline-block;
  font-size: 12px;
  margin-left: 10px;
}
.date-content .text{
  width: 20px;
  height: 20px;
  line-height: 20px;
 display: inline-block;

}
::v-deep .el-calendar-table td.is-selected .text{
   background: #409eff;
   color: #fff;
   border-radius: 50%;
 }
::v-deep .el-calendar__header {
   display: none
 }
</style>
